Buffing-machine.



r I PATENTED AUG. 4, 1908. 'A. BATES.'

BUFI'ING MJLXGHIBTIEH APPLICATION FILED um; 27, .90s;

. 27 712. v I /7. W MT/V55555. Ava/ mma a holder, an abrading elementcarried by the umrnn STATES PATENT ore-Ion. I

ARTHUR BATES, 0F LEICESTER, ENGLAND ASSIGNOR TO-SIDNEY W. WINSLOW.TRUSTEE,

, OF BEVERLY, MASSACHUSETTS.

BUFFING-MACHINE.

Specification-of Letter s Patent.

Patented Aug. 4, 1908.

I Application filed September 27, 1906. Serial No. 336,493.

Leicester, in the county of Leicester, Eng

land, have invented certain Improvements in Buffing-Machines, ofwhichthe following description, in connection with the accompanying drawings,isa specification, like reflike parts in the several figures;

This invention relates to buffing and the like machines and artioularlyto machines em(ployed for finishing the bottoms of boots an shoes.

An object of the inventionis to provide a bufling device in which theacting face of the buffing or abrading element is yieldingly supportedby means which is certain and re iablein its operation and simple andinexpensive in construction.

To this end an importantffeature of the erence characters on thedrawings indicating I invention consists in a rotatable abradingdevicecomprising a holder, an abrading element, and-yielding means forsupporting the 'abrading device against pressure of the work duringoperation.

More specifically the invention consists 1n the combination with arotatable support, of

holder, a reinforcing plate for the abrading element, and means foryieldingly supporting the reinforcing plate against pressure of the workdurin operation of the machine.

In the i1 ustrated embodiment of the invention the buffing devicecomprises a holder secured to a rotatable sleeve, an abrading element,and a reinforcing plate or support for the abrading element having astem 'sli'din 1y mounted in the sleeve and acted upon y'a spring whichforces the plate or sup ort against the abrading device so that saiddevice may yield to the thrust of the work. A pad or'backing of rubber,felt, or the like may be interposed between the abrading elementand-thereinforcing late,

if desired, and referably when such a ack-' "ing is used it w 1 bearranged to extend over 'the lowerface ofthe holder as well as over thereinforcing late. Infthedrawings, which represent a preferredconstruction embody ng this invention, Figure 1 is a side elevation andFig. 2 1s a central vertical section.

' The sleeve 2, which maybe connected-in anysuitable way to the meansfor actuating Burns, a sub-- I thebuifing device,'is' provided with acollar 4 on itslower end, which has screw-threaded I cessed as at 15 toreceive the reinforcin plate 16, which is shown as having an u war lyexin the/hub 6. This provision of the block 17 guided'in the hub allowsthe reinforcing plate to slide vertically, but prevents'loose rocking orlateral movement of said reinforcing plate. The plate is also providedwith a stem 18 which extends upwardly through the hub 6 and the sleeve?and is acted upon by a which may be reg ate by adjusting screw rubber,eather,.or the like,'is shown. as interposed between the abrasivecovering'on one side and thelower face of the clamping member Sand thereinforcing late 16 on the other side. The pad thus ridges the joint orspace between said member 8 and the reinforcing plate and presents acontinuous supportfor the abrasive 'covering. The reinforcing plateyielding'ly supports the abrasive covering against the thrusts of workpresented to the buifingjdevice.

l A bufling device made in accordance with this invention has many ofthe desirable characteristics of such a device in which the abradingelement is supported by a pneumatic cushion, while having the advantagthat it is simple in constructionandnot liab to get out of order.

It will of course be understood that any convenient form of abradingelement and appropriate holder may be used with this invention;

Having now fully explained'the invention, '1 claim as new and desiretosecure by Letters Patent of the United States: I 1. In an abradingdevice, a holder, an abradin element, and a single spring for yielding-ysupporting the abrading element against pressure of the work upon it.

tSJprinEZO, the tension of The lower member of the holder is re- 7otending.cylindrioalblock 17 whic is'received 22. A ad or backing 24,which may be of 2. In an 'abrading device, a holder, an abradingelement,a stiff reinforcing plate for the a-brading element, and means foryieldingly' maintaining the reinforcing plate in position to support theabrading element against pressure of work upon it.

8. In an abrading device, an abrading element, a holder comprising meansfor clamping the abrading element at its edge, a plate for supportingthe acting face of the abrading element, and means for yieldinglymaintaining the plate in supporting position 4. In an abrading device,an abrading element, a holder comprising means for securing .theabrading'elementin operative position and having provision forsupporting the marginal portion of the acting face of said elementunyieldingly against pressure 'of work'upon it, and a plate for yiedingly supporting thecentral portion of the abrading element againstpressure of the work.

5. In an abrading device, a holder, van abrading element, a reinforcingplate for the abrading element, means for yieldingly maintaining thereinforcing plate in position to suppprt the abrading element, and a pador bac 'ng of yielding material between the plate and abrading element.-

-6. In an abrading dei icc, a holder comprising means for securing theabrading element in operative position and having-provision. forsupporting the marginal portion of the abrading element, a yieldinglymounted plate for supporting the central portion of the abradingelement, and a pad or backing ofyielding material arranged between theabrading element and the yielding plate and bridging the space betweensaid plate and holder.

7. In a machine of the class described tne combination with a shaft, ofan abrading device having its working face arranged perpendicularly tothe shaft and comprising a holder, a reinforcing plate, an abradingelement extending ovcrthe plate and secured to the holder, and a springarranged against the late to support the abrading element yieldingly.

In testimony whereol I have signed my name to this specification in thepresence of two subscribing witnesses.

ARTHUR BATES.

Witnesses:

GRACE HoLMns, ARTHUR ERNEST JERRAM.

